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/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#include "song.hpp"
#include <komihash.h>
namespace database {
/* Helper function to update a komihash stream with a std::string. */
auto HashString(komihash_stream_t* stream, std::string str) -> void {
komihash_stream_update(stream, str.c_str(), str.length());
}
/*
* Uses a komihash stream to incrementally hash tags. This lowers the function's
* memory footprint a little so that it's safe to call from any stack.
*/
auto SongTags::Hash() const -> uint64_t {
// TODO(jacqueline): this function doesn't work very well for songs with no
// tags at all.
komihash_stream_t stream;
komihash_stream_init(&stream, 0);
HashString(&stream, title.value_or(""));
HashString(&stream, artist.value_or(""));
HashString(&stream, album.value_or(""));
return komihash_stream_final(&stream);
}
auto SongData::UpdateHash(uint64_t new_hash) const -> SongData {
return SongData(id_, filepath_, new_hash, play_count_, is_tombstoned_);
}
auto SongData::Entomb() const -> SongData {
return SongData(id_, filepath_, tags_hash_, play_count_, true);
}
auto SongData::Exhume(const std::string& new_path) const -> SongData {
return SongData(id_, new_path, tags_hash_, play_count_, false);
}
void swap(Song& first, Song& second) {
Song temp = first;
first = second;
second = temp;
}
} // namespace database
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